The Authenticator app on your mobile phone functions as a key to your account. When you link your SVI Microsoft account to the Authenticator app then this key is stored in the app on your phone. Uninstalling the app, getting a new phone, or a factory reset (wipe) of your phone will remove the key.
When this happens, you will not be able to use the Authenticator app on your mobile to verify your identity, as the key doesn’t exist. You will need to link your new app or phone to your account in order to generate a new key to be able to verify your identity again.
This process is 4 steps:
Getting back into your account
Deleting your old phone/app as a sign-in method
Setting up your new phone/app
(Optional) Enabling passwordless phone sign-in
Step 1 - Logging back into your account
When you first set up the Authenticator app, you would have added your mobile phone number as a backup MFA method. You can use this to verify your identity so that you can log back in
The standard login flow for Microsoft is: Enter email address → enter password → approve notification on phone.
This step will remove the middle requirement of entering your password. This is beneficial because typing your password fewer times results in less chances for your password to be intercepted, either by complicated methods like keyloggers and attacker-in-the-middle techniques, or as crude as someone watching over your shoulder.
Open the Authenticator app on your phone
Tap on the St Vincent’s Institute entry for your email address
Select the Set up phone sign-in option
Enter your Microsoft password and click Sign In
Approve the prompt to “register” the device
This just assigns your device a unique ID and links this to your Microsoft account, so the sign-in requests can be sent to this specific device.
Now that your phone has been registered, you can use it to sign in instead of your password
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